Insecticide Applications During the Pollination Period Do Not Adversely Affect Seed Yields of Loblolly Pine
Three insecticides--Guthion® (azinphosmethyl), Pydrin® (fenvalerate), and Ambush® (permethrin)--were applied to catkins and to ovulate strobili of loblolly pines (Pinus taeda) at the time of maximum ovulate receptivity to determine their effects upon pollen viability, ovulate strobili survival, seed set, seed yields, and seed viability. Concentrations recommended for seed orchard use did not significantly reduce the number of pollen grains/ovule, in vitro or in vivo pollen germination, survival of ovulate strobili, number of developed seeds/cone, number of filled seeds/cone, germination of full seed, or cause an increase in abnormal seed germination. Operational applications of these insecticides to control the webbing coneworm (Dioryctria disclusa) should not cause adverse effects during this sensitive period of seed development in loblolly pine seed orchards.
No Supplementary Data
No Article Media
Document Type: Journal Article
Affiliations: USDA Forest Service, Southeastern Forest Experiment Station, Carlton Street, Athens, GA 30602
Publication date: 1985-11-01
More about this publication?
- Important Notice: SAF's journals are now published through partnership with the Oxford University Press. Access to archived material will be available here on the Ingenta website until March 31, 2018. For new material, please access the journals via OUP's website. Note that access via Ingenta will be permanently discontinued after March 31, 2018. Members requiring support to access SAF's journals via OUP's site should contact SAF's membership department for assistance.
Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
- Membership Information
- Ingenta Connect is not responsible for the content or availability of external websites